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A vector dungeon on a monochrome tube, lit by three subtractive colour gels. Drop a gel and half the room stops existing: a wall you cannot see is not solid, an enemy you cannot see is frozen and cannot be shot. The colour channel is the collision layer, so sight and physics never drift.
PC (Microsoft Windows) · Oct 15, 2026
Worldwide · Exact date · IGDB
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28 achievements available.

Finish a level at 90% accuracy or better, having fired at least fifty shots
LockedSteam

Wear all eight stacks inside a single level, the dark included
LockedSteam

Hidden until unlockedSteam

Clear ten levels in a row without one refused gel change
LockedSteam

Hidden until unlockedSteam

Put all three gels down for the first time.
LockedSteam

Walk through the wall it built
LockedSteam

Carry all six refits at once
LockedSteam

Put one hundred shots through something that was not there
LockedSteam

Break it in the light. Finish it in the dark
LockedSteam

Beat a boss on your last point of hull
LockedSteam

Answer a mixture with one gel, not two
LockedSteam

Spend five minutes of one run in the dark
LockedSteam

Move first, not after
LockedSteam

Beat a boss without being hit
LockedSteam

Clear a whole tier without the tube ever pushing you out of the dark
LockedSteam

Learn the beat, and break it on the swing
LockedSteam

Break a core by wearing its colour
LockedSteam

Have a gel change refused one hundred times. Something was in the way, every time
LockedSteam

Take the same refit five times in one run
LockedSteam

Three cores, and no stack that fits two of them
LockedSteam

Reach the fifth boss without ever taking HULL
LockedSteam

Stand inside a wall that exists in every colour
LockedSteam

Hidden until unlockedSteam

Clear a level without being hit
LockedSteam

Clear a whole tier without being hit
LockedSteam

Hidden until unlockedSteam

Fight in the gaps it leaves you
LockedSteam
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